package minidb.querycondition;
import java.util.regex.*;

public interface IOperand
{
	public Boolean Equals(IOperand o);
	public Boolean NotEq(IOperand o);
	public Boolean LittleThan(IOperand o);
	public Boolean GreateThan(IOperand o);
	public Boolean LittleEq(IOperand o);
	public Boolean GreateEq(IOperand o);
	public Boolean IsNull();
	public Boolean IsNotNull();
	public Boolean LIKE(IOperand o);
	public Boolean NOTLIKE(IOperand o);
}
